Distributed processing for video enhancement and display power management
US7873229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | May 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In visual display devices such as LCD devices with backlight illumination, the backlight typically consumes most of device battery power. In the interest of displaying a given pixel pattern at a minimized backlight level, the pattern can be transformed while maintaining image quality, with a transform determined from pixel luminance statistics. Aside from, or in addition to being used for such minimizing, a transform also can be used for image enhancement, for a displayed image better to meet a visual perception quality. In either case, the transform preferably is constrained for enforcing one or several display attributes. In a network setting, the technique can be implemented in distributed fashion, so that subtasks of the technique are performed by different, interconnected processors such as server, client and proxy processors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.